Measured DIB 8620

We confirmed a tight relation between EW and E(J-Ks) as well as Av, with similar fitting coefficients as found by previous works. With a more accurate sample and the consideration of the solar motion, the rest-frame wavelength of DIB 8620 was redetermined as 8620.83 angstroms.

We studied the kinematics of the DIB carriers by tracing their median radial velocities in each field in the local standard of rest and into the galactocentric frame, respectively, as a function of the Galactic longitudes. Based on the median velocity and two Galactic rotation models, we got valid kinematic distances of the DIB carriers for nine GIBS and ten GES fields. We also found a linear relation between the DIB 8620 measured in this work and the near-infrared DIB in APOGEE spectra at 1.5273 micron.